Developer Registration Utility – Now you can unlock you Windows Phone 7 device for development purposes.

XAP Deployment Tool – if you want to deploy XAP files directly to an unlocked device, now you can.

The Windows Phone 7 API – we’re getting close to completion. Many namespaces that were previously distributed over several different DLLs have now been consolidated into one. In addition, there have been realignments and changes in several other namespaces as well. Push Notifications, Accelerometer and App Bar APIs have all been updated.

Additional Controls – There are some additional controls coming in the next few weeks (i.e. Panorama and Pivot) which didn’t make the beta release. They are coming soon.

Control Templates – Silverlight for Windows Phone control templates have been updated to match evolutions in the overall OS.